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Looks like the High side driver is seeing high voltage. If you have already replaced the external harness with a new on that leaves.... a faulty TCM, or an internal fault with the wiring. If you had a test TCM that would eliminate the TCM at least. Be sure to check pin drag and inspect all the...

Here is the troubleshooting guide.

It sounds like it has an active shift inhibit. Make sure the TCM fuses are good. If it is a push button shift selector can you pull the fault codes? Could be power, ground, or a can communication fault. Need more info to help further.

Never had an issue here, never heard of such and issue. You have to do it properly when programming or it wont take. Could possibly be a Allison issue but doubtful. Is the dealer/tech knowledgeable? He should have opened a tech assist case if he cant figure it out. PM me your vin. I can take a...

No. It is just a maintenance icon. At 150k miles you should have the Nozzle, igniters, flame temp sensors replaced. The mantle inspected and the orifice cleaned. Then perform a DPR differential pressure test. If the Differential pressure is good clear the light. Wen I worked at another dealer we...

No biggie. You’ll get em next time. If you need anything else let me know.

If I gave you instructions on how to properly perform a valve adjustment would you actually follow them? I gave you instructions on how to exactly pinpoint the issue you were having. Instead of bypassing the low pressure/suction of the system you wanted to know the resistance of the SCV? Now its...

If you have a usb link (Nexiq 1) this is the connector end you need. I purchased this exact one and it works fine, works on Isuzu and UD as well. I bought it from amazon for $22. Copy and paste the listing below and enter it in the amazon search section. The connector is 448013 if you want...

Do you know what codes? Usually the change def warning is caused by the def injector. On 2013my’s they box sensors validate the def quality. You could have a box sensor issue as well. Either way without the Dealer software you will never cure this problem. You need to fix the root cause and...

Remove the spin on transmission filter, install a new filter pre-filled with Dextron ATF. Drain the fluid an replace the fluid with new. I worked at a dealer for 10 years and that.s how we did it. Its not that it cant be done. But you would need a flushing machine and they are expensive. Drain...

Glad you found it. First rule of Hino is check EVERY fuse and make sure EVERY fuse is accounted for.

Step Action Values Yes No 1 Inspect for a loss of system pressure and/or coolant. Is there a loss of system pressure and/or coolant? — Go to Step 2 Go to Step 3 2 Inspect and repair any faulty hose connections or radiator cap. Fill the system to the proper level, then retest. Does the...

Forget it,:sweat: I just noticed you have the 6.0 gas job. I saw "HEAD" done and assumed you meant the 4 cylinder diesel.

This thing's essentially a Isuzu NPR

TSB

Not sure if you have to remove the cab. I would just remove the rear cab mounts and jack it up enough to do my work. I never had to remove the entire cab, and i even put a radiator in the Peanutmobile that Planters drives around once. I would not overlook the radiator cap as a culprit. Make...

The 2004 manual states you DO have a hand primer. See the attached bleed procedure. If this is not the fuel configuration on your engine then it is not a 2004.

No electric fuel pump, and the vacuum pump runs off the back of the alternator. Remove the inlet to the fuel pump, install a test line directly into a separate container of fuel, (or tou can run it in the tank if you have the saddle tank) crank the truck over and verify it is sucking fuel, then...

Yeah it’s a junction connector in the passthrough, almost like a bus bar.